An inverter is an electronic device that converts direct current (DC) into alternating current (AC). This process is essential because most household appliances, like refrigerators and televisions, operate on AC power. Inverters are commonly used in solar energy systems, where they convert the DC electricity generated by solar panels into AC electricity that can be used in homes or fed into the electrical grid. Inverters come in various types, including pure sine wave and modified sine wave inverters, each serving different applications. They are also crucial in uninterruptible power supplies (UPS) to provide backup power during outages. Overall, inverters play a vital role in modern energy systems and technology.